Instantaneous electric water-heater.



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N, EGGS@ UNITED STATES PATENT OFFIQE.

HERBERT N. EOOHE Ann EaEn E. enEESE, or SAi\T rRANciScO, CALIFORNIA,Assienons OE ONE-HALE To "ri-1E JAMES W. EDWARDS co., ONE-FOURTH To sAinnEnnEe'r E. noone, Aun one-FOURTH rro THOMAS E. GRAY,

OFl SAN FRANCSC, CALFGRNA.

lNSTANTANEUS ELECTREG WATER-HEATER.

Specification of Letters latent.

Fatented June 25, 1907.'

application filed October 20, 1904.-. Serial No. 229,227.

ei-ectric Water heaters, the Object oi our in-v `i'ention being toprovide a device of this character Which shali be compact in form,'simple in construction, capable of easy inspection and repair, andwhich can be operated to deliver water Without using the heatingapparatus, that 'is,.to deliver coldv water when desired,- andespecially to pro Vide a construction which will render it impossible to(turn on the electric current Without at the same tirneturning on theWater.

in the accompanying drawing, Figure 1 is a brokenside elevation of theapparatus; Fig. 2 is a broken side View orq a heater; Fig. 3 is anenlarged broken horizontal section .on the line 3-3 of Fig. 1; Fig. i isa similar View on the line 1i-4 of Fig. i Fie. 5 is a broken side Viewof the lower part oi the apparatus at right angles to 1.

Referring to the drawing, 1. represen the iii-let branch pipe of a ya yecasing 2, in Which is the valve 3 operated by a handle fi, said Valveturning through a right angie in either direction from the positionshutting O'f the water to that turning it on in full.

An uplift pipe 5 leading from said valve caspasses through the bottom oia cylindrical casing d, which incloscs a number of heating tubes 7, ofWln'ch in the present instance We have Shown three, although .the runbermay be Varied. The bottom. ci each heating tufee is permanently ciosedencent 8 at one side thereoi, anged that ali ot i ated as near as porcentrai axis Ot the casing, and openings are coi/ered by a covercentrally secured thereto pipe i@ 'wl screwed into the end ci the upiiitpine 5. Hence the Water can pass from said pine 5 through said openingsthe interior of Said said said heating tubes. The Space between thetubes 7 at the bottom iS filled with solder' 44. The innerI surface ofeach heating tube is lined with insulating material 11, as, forinstance, vulcanized iiber, and Within the same is inserted a heatercomprising, iirst, a tube 12 oi porcelain or othersuitable non-conducting material, Secondly, a high resistance wire which is iirst formedinto a cylindrical coil and inserted into the porcelain tube, is thenpassed around. the bottom of the tube to thev outside oi the same and isthen Wound in a spiral coil up to the upper end of the tube, andthirdly, a round rod 14 of porcelain, slate, or other non-conductingmaterial, not aecting, or being affected by, Water. Thev Object of thisrod is to fill up the space inside' the innercoil, compelling the Waterto iioW rapidly, but in a small stream, over the high resistance wire,and 'for this same object the porcelain tube is made of such diameterthat when the high resistance wire is Wrapped around the same, it almostills ,the heating tube. To obtain the best results the Volume oi Waterin each heating tube should be as small as possible for a given quantityof heating surface orn Wire, this small Volume being compensated b j arapid flow. l

The ends of the coilsin each heating tube are connected to diametricallyopposite terminals 15 in the form' oi screws Scre-We through hard rubbersleeves 16 which are again screwed through bearings 17 secured to the`sides of the tube. By this means the electric circuit is continued tothe outside of the tube, While being insulated therefrom, andprovidingno chance for lealrageoi' the Watcr.,. rPhe tops of the tubes are closedby caps 18 which are Screwed into the tubes by siots d0, and said capshave small openings 19 near the side of the cap, said Openings being allbrought as near as possible to the central airis between the threetubes, and they are then inclosed by a cover 20 soldered down upon thecaps, said cover having a pipe 21 extending upward 'from the middlethereof and passing through the coyer 22 for the casing, said cover bY Ared to said casing by screws 23. i discharge pipe 24 is passed through acentral hele in said cover, into the a gear Wheel 36 secured to the stemet the insulating' block 3l secured upon the end oi' a lower end ofwhich discharge pipe the upper end of the tube 2l passes, and said lowerend is screwed down upon said uba The wires from the several coils areconnected, preferably in parallel, with terminals .26 which extendthrough an opening; 27 cut in the side of the casing., and pass throughand are supported bvv an insulatingl block 2S which is screwedron tosaid casingr and closes said opening. These terminals on the outside ofsaid blocl; are apertured vertically as shown at 29 and through saidvertical apertures slideinetallic'bars 30 connected to an rod 32 slidingthrough a bearing 33 secured upon the outside of the casing, the lowerend of said rod having securi'ed thereto a rack 3l which slides in aslideway and meshes with valve 3, said slideivav being: attached to abracket 42 secured to the bottoni ot the casing. The upper end of saidmetalic rods 30 are adapted to slide int-o and through vertical holes 37formed. in terminals 3S secured to an insulating block 39 secured uponthe top ot the cover 22 of the casing, and to said terminal S8 aresecured Wires il connected with a suit-able electric circuit. Thearrangement is'such that the valve 3 is opened before said slide barscome into contact with. said upper terminals 3.8, so that there is nocircuit until after the Water has commenced flowing. This preventsoverheating el the wires and consequent injurT to the apparatus. Toobtain cold Water the valve is turned in the opposite direction' througha right angle, which opens the valve Without closing the circuit.

It Will be observed that the openings 8 at the bottom ofthe heatingtubes are consid-,4. erably larger than the openings 19 at the topthereof; this avoids any diminution ol' pressure in the heater.

l. ln an apparatus of the character described, the combination oi acasing, aplurality of heating tubes therein, a lining or insulatingmaterial on the inside of each tube, a tube of non-conducting materialwithin each tube, a coil of high resistance Wire Within the inner tube,said Wire being continued in a coil on the outside of the tube, a rodotl non-conduclzvting material Within the inner coil, means forconnecting the ends of the coils of the sevsassi eral tubes in series,'M.cans for.connecting-the ends ol' the series that. tric circuit, meansfor admitting water in suc- `'on through the outer tubes. and an op econnection betnf'ceju Claid meansu'licriby they act in unison,suost-a'ntially described.

2. ln an apparatus of the character described, the combination eincasino, a water conduit therein, an electric heatingcoil in the Waterconduit, terminals on the casii'ipj connected to the. ends ol saidcoils, a second pair oi terminals on the casing connected with anelectric circuit, a valve supplying 4Water to the Tvater conduit, Iand apair oi' slide bars sliding through the one pair ol tern'iinals andoperatively connected with the valve to contact with the other terminalsre spectivelj.when the valve is open, substan tiallyV described.

3. in, an apparatus of the character described, the cnnbination oi acasing, a pho ralit)7 oi parallel heatin, r tubes therein each having anend closed exceptlor a small opening therein, all of the openiiigsbeing'arranged near to'each other, a cover inclosingall el.' said openings, apipo'leading therefrom, elec tric heaters in the several tubes, meansi'or supplying Water to the tubes, and means lor supplyingl electricityto the heaters, subs-tenitiall)v as described 4. In an apparatus o'i thecharacter described, the combination oi' a casing, a pluralitj otparallel heatingl tubes therein, each tube having a large opening in itssupplv end formed Awith an elec l 'j and a small opening` in itsdischarge end, all

the openings at each end being arranged near to each other, a coverinclosingg' the openings 4at each end, means i'or supplying water to thecoverat the supplyv end and discharging it from the cover at thedischarge end, electric heaters in the several tubes, and means forsupplying,r electricity7 to the same, substantiallkvv as described.

In witness Whereoil We have hereunto set our hands in the presence el"two subscribing- Witnesses.

HERBERT N. ROCHE. FRED F. BREESE,

Vitnesses: v

FRANCIS M. Winer-ir, Bassin GORFINKEL.

